Arsenic

Camp Pendleton (South)

Arsenic is a potent carcinogen and common contaminant in drinking water. Arsenic causes thousands of cases of cancer each year in the U.S. Click here to read more about arsenic.

MORE ABOUT THIS CONTAMINANT

141

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2013	N/A	0	0	N/A
2014	0.667 ppb	21	4	ND - 4.10 ppb
2015	0.463 ppb	24	3	ND - 4.90 ppb
2016	0.580 ppb	20	5	ND - 2.60 ppb
2017	0.770 ppb	23	7	ND - 3.30 ppb
2018	0.843 ppb	28	9	ND - 3.20 ppb
2019	0.584 ppb	25	6	ND - 2.90 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.004 ppb

The EWG Health Guideline of 0.004 ppb for arsenic was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL) 10 ppb

The legal limit for arsenic, established in 2001, was based on costs for arsenic removal, as calculated at the time that the standard was set. This limit does not fully protect against the risk of cancer due to arsenic exposure.

ppb = parts per billion

All test results

Date	Lab ID	Result
2014-01-27	9590-039-1100	ND
2014-01-29	9590-032-1115	ND
2014-02-13	9590-030-1115	ND
2014-04-23	9590-009-0944	ND
2014-04-23	9590-034-1115	ND
2014-04-24	9590-022-1115	ND
2014-04-25	9590-014-1150	ND
2014-04-25	9590-036-1115	ND
2014-04-28	9590-035-1210	ND
2014-05-21	9590-030-1015	ND
2014-05-21	9590-039-1050	ND
2014-05-23	9590-049-1030	ND
2014-06-11	9590-043-1140	2.30 ppb
2014-06-12	9590-044-1220	ND
2014-06-24	9590-037-1100	3.80 ppb
2014-07-09	9590-049-1030	ND
2014-07-14	9590-039-1120	4.10 ppb
2014-07-17	9590-030-1140	3.80 ppb
2014-10-28	9590-030-1115	ND
2014-11-06	9590-049-1155	ND
2014-11-20	9590-039-1255	ND
2015-01-16	9590-030-1035	ND
2015-01-21	9590-049-1315	ND
2015-01-26	9590-039-1210	ND
2015-03-13	9590-043-1336	ND
2015-03-13	9590-044-1310	ND
2015-03-16	9590-020-1220	ND
2015-03-16	9590-037-1250	3.60 ppb
2015-03-18	9590-019-1050	2.60 ppb
2015-03-18	9590-034-1242	ND
2015-03-19	9590-018-0800	ND
2015-03-24	9590-022-1105	4.90 ppb
2015-04-01	9590-036-1025	ND
2015-04-09	9590-014-0945	ND
2015-05-11	9590-039-1145	ND
2015-05-12	9590-049-1135	ND
2015-05-20	9590-030-1000	ND
2015-07-24	9590-030-1020	ND
2015-07-27	9590-039-1300	ND
2015-08-13	9590-035-1046	ND
2015-08-24	9590-049-1145	ND
2015-08-24	9590-051-1230	ND
2015-10-14	9590-039-1230	ND
2015-10-14	9590-049-1120	ND
2015-10-15	9590-030-1215	ND
2016-01-13	9590-049-1230	ND
2016-02-05	9590-039-1115	ND
2016-02-19	9590-030-1050	2.00 ppb
2016-04-21	9590-034-1236	ND
2016-04-21	9590-035-1205	ND
2016-04-26	9590-022-1105	2.20 ppb
2016-04-26	9590-037-1220	2.30 ppb
2016-04-27	9590-019-1248	2.50 ppb
2016-04-28	9590-043-1145	ND
2016-04-28	9590-044-1102	ND
2016-04-29	9590-014-1130	ND
2016-04-29	9590-036-1048	ND
2016-05-03	9590-030-1200	ND
2016-05-05	9590-039-1115	ND
2016-05-05	9590-051-1045	ND
2016-05-12	9590-020-1130	ND
2016-08-03	9590-039-1200	ND
2016-08-08	9590-030-1130	ND
2016-11-01	9590-030-1115	ND
2016-11-21	9590-039-1325	2.60 ppb
2017-01-09	9590-030-1140	ND
2017-02-15	9590-039-1120	ND
2017-03-07	9590-036-1110	ND
2017-03-08	9590-014-1105	ND
2017-03-09	9590-020-1115	ND
2017-03-09	9590-035-1150	ND
2017-03-09	9590-051-1230	ND
2017-03-17	9590-019-1146	2.60 ppb
2017-03-17	9590-034-1240	ND
2017-03-17	9590-037-1115	3.30 ppb
2017-03-23	9590-022-1250	3.10 ppb
2017-03-30	9590-043-1135	ND
2017-03-30	9590-044-1115	2.10 ppb
2017-05-10	9590-039-1215	ND
2017-05-11	9590-030-1245	ND
2017-07-13	9590-030-1300	2.00 ppb
2017-07-21	9590-049-1310	ND
2017-07-24	9590-039-1030	ND
2017-11-01	9590-039-1200	ND
2017-11-17	9590-032-1045	2.00 ppb
2017-12-04	9590-030-1245	2.60 ppb
2017-12-13	9590-018-0740	ND
2017-12-28	9590-049-1110	ND
2018-01-09	9590-032-1320	2.10 ppb
2018-01-25	9590-039-1120	ND
2018-02-05	9590-030-1315	ND
2018-02-08	9590-014-1235	ND
2018-02-12	9590-036-1335	2.90 ppb
2018-02-12	9590-049-1110	ND
2018-02-14	9590-018-0740	2.20 ppb
2018-03-14	9590-051-1242	ND
2018-03-15	9590-020-1130	ND
2018-03-15	9590-035-1200	ND
2018-03-21	9590-034-1245	ND
2018-03-22	9590-043-1125	3.00 ppb
2018-03-22	9590-044-1020	ND
2018-03-26	9590-022-1340	3.20 ppb
2018-03-29	9590-019-1225	3.00 ppb
2018-03-29	9590-037-1302	2.50 ppb
2018-04-24	9590-039-1220	ND
2018-04-25	9590-030-1300	ND
2018-05-01	9590-049-1300	ND
2018-05-16	9590-032-1230	2.30 ppb
2018-07-23	9590-039-1145	ND
2018-07-25	9590-030-1152	ND
2018-07-27	9590-032-0822	ND
2018-08-13	9590-049-1000	ND
2018-11-06	9590-030-1245	2.40 ppb
2018-11-13	9590-032-1245	ND
2018-11-13	9590-049-1230	ND
2018-11-19	9590-039-1100	ND
2019-01-09	9590-030-1230	2.50 ppb
2019-01-23	9590-039-1200	ND
2019-01-28	9590-032-0945	2.00 ppb
2019-01-28	9590-049-1040	ND
2019-01-30	9590-020-1052	ND
2019-01-31	9590-034-1100	ND
2019-02-21	9590-014-1320	ND
2019-02-28	9590-051-1042	ND
2019-03-01	9590-035-1102	ND
2019-03-15	9590-043-1035	ND
2019-03-15	9590-044-1120	ND
2019-03-21	9590-019-1136	2.30 ppb
2019-03-21	9590-037-1100	2.90 ppb
2019-05-07	9590-032-0835	2.00 ppb
2019-05-07	9590-049-1025	ND
2019-05-08	9590-039-1215	2.90 ppb
2019-05-09	9590-030-1100	ND
2019-07-24	9590-039-1200	ND
2019-07-30	9590-032-0730	ND
2019-07-30	9590-049-0830	ND
2019-09-19	9590-030-0638	ND
2019-10-30	9590-030-1045	ND
2019-11-12	9590-039-1220	ND
2019-11-14	9590-032-0710	ND
2019-11-14	9590-049-0810	ND